Bhishma Ashtami Snan is observed on the Magh Shukla Paksha
Ashtami – eighth day of the Magh Month – as per traditional Hindu Lunar
Calendar. In 2016, Bhishma Ashtami Snan is on February 15. The Snan or bathing
on holy rivers on the day is considered highly meritorious.

People also perform Bhishma Ashtami Tarpan (rituals
dedicated to dead) on the day on river banks. It is dedicated to Bhishma and
forefathers.

Bhishma Ashtami Snan is mainly held in parts of North India
and Bengal.